Objective: The aim of this study was to explore the impact of ultrasound-guided injections at various sites at the knee joint. Method: One hundred and twenty subjects with grade III and IV knee OA were enrolled in the study. Participants were randomly divided to receive ultrasound-guided intra-articular injections of Hyaluronic Acid using the envelop method of simple random technique ... https://herbsdailyes.shop/product-category/transfer-equipment-benches/